Azumarill- STAB priority, Huge power, and a nice new Typing, nice bulk, as well as a cool boosting move (Belly Drum) will definitely keep this thing out of UU.
Togekiss- This thing is the ultimate Garchomp counter, with its new Typing of Fairy/Flying, and it boasts a similar arsenal to Jirachi.
Talonflame- Despite the X4 weakness to SR, and mediocre stats, I feel like Talon will have a roost in OU. With defog, you can remove hazards, with Spider Web, you can slow down the opposition, and STAB +2 Brave Bird really isn't all that difficult to have done.
Rotom-W- Tons of resistances, volt switch, good bulk, and immunity to Parahax is going to make this little guy just as used as last gen.